MAAS used wrong commissioning series

[Marian Gasparovic]

While testing MAAS 3.4 we encountered an issue when machines were commissioned using bionic instead of jammy.
We download bionic, focal and jammy images and we don't specify default commissioning series. Machines are commissioned with jammy. But in this run all machines failed commissioning and in rsyslog we can see it used bionic. Then it failed later because commissioning script uses Python3.

Logs - https://oil-jenkins.canonical.com/artifacts/0ab95743-3cad-4cde-be19-d6d4be8c1cc9/index.html

We have two occurrences of this issue.

[Christian Grabowski (cgrabowski)]

Hi there, looking at the hardware info in the artifacts, to confirm, these are all amd64 machines? And are the machines being commissioned bare metal or VMs?

[Marian Gasparovic (marosg)]

Yes, all amd64 and all commissioning machines are baremetal

[Christian Grabowski (cgrabowski)]

able to reproduce when commissioning a new bare metal machine specifically on 3.4 latest. Does not seem to be the case upon recommission, nor the commissioning that occurs when composing VMs.